66881620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{4217}}^1$

素因数の和:4300

約数の個数: 48

約数和(自身を含む): 153771408

約数和(自身を除く): 86889788

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 3172, 3965, 4217, 7930, 8434, 15860, 16868, 21085, 42170, 54821, 84340, 109642, 219284, 257237, 274105, 514474, 548210, 1028948, 1096420, 1286185, 2572370, 3344081, 5144740, 6688162, 13376324, 16720405, 33440810, 66881620]

約数ペア:

[(1, 66881620), (2, 33440810), (4, 16720405), (5, 13376324), (10, 6688162), (13, 5144740), (20, 3344081), (26, 2572370), (52, 1286185), (61, 1096420), (65, 1028948), (122, 548210), (130, 514474), (244, 274105), (260, 257237), (305, 219284), (610, 109642), (793, 84340), (1220, 54821), (1586, 42170), (3172, 21085), (3965, 16868), (4217, 15860), (7930, 8434)]